white screen when i boot up my com acer aspire 6930g when on battery

win 7 64 aspire 6930g.  ive cracked the original screen got another put in 1366-768 resoloution generic it should have been the 1080 full hd but didnt no a thing about coms at the time so i got had with that anyway its all of a sudden when i start up my LT when the leads not in powerlead it loads up empowering then goes white unless im realy quick and apply the powerlead .now it still goes white when the powerlead is pluged in on power up but it eventualy comes on after a good few secs though then othertimes igotta start it up again to get it to go from white to on but while powerleads out it wont come out of the white then grey stage is my screen goin cause ive been ripped or could it be a driver problem or somthing else? can any1 help its been ok for about 9 month . does any1 no where i can get the proper screen for this system cheap ,infact how much am i looking at for 1 . is the screen 1366-768 even hd ?  

the screen is internal its going white when i play a video of msn or so now so ive had to press power button so it goes to sleep then plug in the power and press power button out of sleep then it comes on!!! i have the old screen here and the inverter is still on the broken screen so   the new screen must have been fitted with its own inverter with it no being the right screen as in its only 1366-768 and not 1080 full hd he must of bypassed the power socket as ive read could that have burnt anything out i have an external screen here is it worth trying that to see if the same happens on that screen ?

oh i forgot ive installed driverpack 11 and its since i installed all the new drivers the problem has started i dnt suppose you could take me through the settings to see if my settings are set higher than this screen can handle its got to be a setting or driver problem can you help as i cant even see when i installed the driverpack on the system restore to go right back to undo the installation hope some1 can help me out please